JP2001183040A - Freezer refrigerator - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a refrigerator, a simple configuration is used to discharge remaining water after completion of water supply to an ice tray and eliminate the necessity of a reverse rotation operation after the operation is completed, thereby reducing the capacity of a pump motor. To reduce the cost, reduce power consumption, and extend the service life. In a refrigerator including an ice making device,
The water supply tank 9 and the self-priming pump 2 are placed in the refrigerator compartment 21, the ice tray 4 is placed in the freezer compartment 20, and the water supply pipe 35 that guides the water supply from the pump 2 to the ice tray 4 is located near the pump. An air intake 7a communicating with the inside of the pipe is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having an ice making device, and more particularly to a water supply tank arranged in a refrigerator compartment, which is supplied with water by a self-priming pump to an ice tray arranged in the refrigerator compartment through a water supply pipe. It is suitable for a refrigerator having an ice making device.

[0002]

2. Description of the Related Art A conventional refrigerator having an ice making device will be described with reference to FIGS.

The ice making device 1 includes a detachable water supply tank 9,
It comprises a self-priming pump 2, a water supply pipe 35, and an ice tray 4. Among them, the ice tray 4 is 20 freezer compartments.
The other members are arranged in the refrigerator compartment 21. The water supply pipe 35 has a tip extending into the freezing compartment 20. The ice tray 4 is a tray for freezing the water inside. The ice tray 4 has a built-in reversing device 11 and the like.
And twists the ice tray 4 to release ice. The water supply tank 9 is a container in which water is stored. The water supply tank 9 is provided with a lid 9 a
Are provided in a closed state. The pump 2 is for supplying water to the ice tray 4. The pump 2 draws water from the water supply tank 9 by the forward rotation of the pump 2, and supplies water to the ice tray 4 via the water supply pipe 35. Reference numeral 6 denotes an ice storage container for storing ice in the ice tray 4, which is installed below the ice tray 4.

[0004] The water supply tank 9 has accessories such as a lid 9a formed of a resin or the like and a filter. A hole is provided in the center of the lid 9a, and the discharge pipe 8 is attached to this hole. The discharge pipe 8 has a suction pipe portion 8a extending into the tank. The suction pipe 8a reaches the bottom of the water supply tank 9. Further, a tank-side connecting portion 15 extending horizontally in the side of the pump 2 is provided at a portion protruding from the discharge pipe 8. Further, a mounting portion for mounting the water supply tank 9 is provided on the pump side, and a pump side connection portion 17 is provided on an opening side thereof via a support base or the like. Here, water is poured into the water supply tank 9 described above. Thereafter, when the water supply tank is pushed into the mounting portion, the tank-side connection portion 15 is inserted into the pump-side connection portion 17.

In such a configuration, after the water supply operation of the pump 2 is completed, the pump 2 is reversely rotated for a certain period of time to return the residual water in the water supply pipe 35 to the water supply tank 9. . The reason for performing this reverse rotation operation is that residual water accumulates in the water supply pipe 35 after water supply and the water supply tank 9
This is for preventing the phenomenon that the water in the inside moves into the ice tray 4 via the water supply pipe 35, preventing the residual water from dropping into the ice tray 4 beforehand, and the like. A filter (not shown) is provided in the pipe 10 on the suction side of the pump 2 to prevent dust and the like from entering the pump 2 to prevent the gear from being locked. For this reason,
The filters need to be cleaned from time to time. As this cleaning means, dust and the like are removed when passing through the filter by residual water returned during the reverse rotation operation of the pump 2 described above.

[0006] Incidentally, as related to such a conventional technique, for example, there is one disclosed in Japanese Patent Application Laid-Open No. 7-77371.

[0007]

In the prior art refrigerator-freezer, a water supply pipe 35 is provided after the pump 2 supplies water to the ice tray 4.
In order to remove the water remaining in the pump, an operation of pumping all the residual water in the water supply pipe 35 by the reverse rotation operation of the pump 2 is included.
A large and large capacity is needed to pump up the residual water in 5. Therefore, the pump 2 needs a larger capacity than the capacity required for the water supply operation,
It becomes expensive and its power consumption also increases. In addition, in order to pump up all the residual water in the water supply pipe 35, since the pump 2 must be operated several times intermittently after water supply, a complicated reverse rotation operation is performed in the control circuit of the ice making device 1. Need to be included,
The service life of the pump 2 itself is shortened.

The present invention has a simple structure and discharges water, which tends to remain in a water supply pipe after the water supply operation of a pump is completed, to an ice tray by inflow of air from an air inlet, thereby ending the normal rotation operation of the pump. It is an object of the present invention to provide a refrigerating refrigerator having a long life and a high reliability, which eliminates the necessity of performing a reverse rotation operation later, makes it possible to reduce the capacity of a pump motor and reduce the cost and power consumption.

[0009]

A first feature of the present invention to achieve the above object is to provide an ice making apparatus having a water supply tank, a self-priming pump, a water supply pipe and an ice tray, a refrigerator, and a lower part thereof. And a refrigerator body forming a freezer compartment,
The water supply tank and the pump are arranged in the refrigerator compartment,
The ice tray is disposed in the freezer compartment, the water supply pipe is disposed from the refrigerator compartment to the freezer compartment, and the pump is located above a water surface in the water supply tank to supply water from the water supply tank. Suction, connected to the water supply tank and the water supply pipe so as to supply water to the ice tray through the water supply pipe, wherein the water supply pipe is provided with an air intake communicating with the inside of the water supply pipe near the pump. I did it.

A second feature of the present invention is that the water supply pipe is a water supply pipe portion extending in a horizontal direction from a discharge port of the pump, and has a cross-sectional area equal to or more than an inner cross-sectional area of the water supply pipe. Is provided, and an air intake port communicating with the inside of the water supply pipe is provided in a portion located above the rising portion.

A third feature of the present invention is that the water supply pipe is divided into a plurality of parts having an upper water supply pipe connected to the pump and a lower water supply pipe leading to the ice tray.
The upper water supply pipe is provided with an air inlet communicating with the inside of the water supply pipe.

A fourth feature of the present invention is that the pump is located above a water surface in the water supply tank, sucks water from the water supply tank through the pipe, and supplies water to the ice tray through the water supply pipe. Connected to the pipe and the water supply pipe, the water supply pipe is provided with an air intake communicating with the inside of the water supply pipe at a position near the pump, and the pipe including the pump is provided at an angle to the water supply tank side. That is.

A fifth feature of the present invention is that the pump is located above a water surface in the water supply tank, sucks water from the water supply tank, and supplies the water to the ice tray through the water supply pipe. The pump is connected to the tank and the water supply pipe, and the pump automatically performs a reverse rotation operation before starting the water supply operation by the forward rotation, and the water supply pipe is located near the pump and has an air intake communicating with the inside of the water supply pipe. An inlet is provided, and the pipe is provided with a filter in the middle.

A sixth feature of the present invention is that the water supply pipe is divided into a plurality of portions having an upper water supply pipe connected to the pump and a lower water supply pipe leading to the ice tray.
There is provided a connection part vertically positioned between the upper water supply pipe and the lower water supply pipe, and the connection part has an air inlet communicating with the inside of the water supply pipe.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In the second and subsequent embodiments, some of the components common to the first embodiment are omitted, and
A duplicate description will be omitted. The same reference numerals in each drawing indicate the same or corresponding components.

First, a first embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 1 is a schematic longitudinal sectional view of a refrigerator according to a first embodiment of the present invention, FIG. 2 is an enlarged longitudinal sectional view of a main part of the refrigerator of FIG. 1, and FIG. FIG. 4 is an enlarged vertical sectional view of a portion A in FIG. 2.

As shown in FIG. 1, the refrigerator body 30 has a refrigerator compartment 21 and a freezer compartment 20 which are vertically divided. In addition, although the door which can be opened and closed is provided in the front of the refrigerator compartment 21 and the freezer compartment 20, it is omitted in FIG.

The ice making device 1 includes a water supply tank 9, a discharge pipe 8,
It comprises a pipe 10, a self-priming pump 2, a water supply pipe 35, an ice tray 4, an inverting device 11, an ice storage container 6, and the like. In this ice making device 1, a water supply tank 9, a discharge pipe 8,
The piping 10 and the self-priming pump 2 are arranged in the refrigerator compartment 21, the ice tray 4, the reversing device 11, and the ice storage container 6 are arranged in the refrigerator compartment 20, and the water supply pipe 35 is connected to the refrigerator compartment 21 from the refrigerator compartment 21. 20 are arranged. In this case, the refrigeration room 21 is not limited to only the refrigeration room for storing general stored food, but includes a refrigeration room for exclusively storing the water supply tank 9 and the pump 2 and a vegetable room for mainly storing vegetables. The freezer compartment 20 is not limited to the freezer compartment for storing general frozen foods, but includes an ice compartment for exclusively storing the ice tray 4, the reversing device 11, and the ice storage device 6, and the like. .

The water supply tank 9 is a container for storing water therein. The water supply tank 9 has a lid 9a formed of a resin or the like, and is formed in a sealed shape (see FIG. 2). (Not shown) from the front so that it can be mounted and removed. The lid 9a is detachably attached to the water supply tank 9. A hole is provided in the center of the lid 9a, and the discharge pipe 8 is attached to this hole.

The pump 2 is for supplying water to the ice tray 4, and is constituted by a gear pump having a self-priming property.
Water is sucked in through the pipe 10 and supplied to the ice tray 4 through the water supply pipe 35.

The discharge pipe 8 is integrally provided with a suction pipe portion 8a extending into the water supply tank 9 and a tank side connection portion 15 extending upward and inclined to the pump 2 outside the water supply tank 9. ing. The suction pipe 8a is connected to the water tank 9
Down to the bottom.

The pipe 10 extends obliquely downward from the pump 2 to the discharge pipe provided in the water supply tank 9, and a pump-side connecting portion 17 is provided at the tip thereof. Discharge pipe 8
The relationship between the pipe 10 and the water supply tank 9 is such that when water is supplied into the water supply tank 9 and the water supply tank 9 is pushed into the mounting portion, the water supply tank side connection portion 15 is inserted into the pump side connection portion 17. ing. Also, the pipe 10 on the suction side of the pump 2
A filter 18 is provided therein.

Here, since the pipe 10 including the pump 2 and the tank side connection portion 15 are inclined toward the water supply tank side, after the forward rotation operation of the pump 2 is completed, the pipes 10 and 15 including the inside of the pump are also inserted. The remaining water can be prevented from accumulating.

The water supply pipe 35 has one end connected to the discharge port of the pump 2 disposed in the refrigerator compartment 21, and the other end extending into the freezer compartment 20. The details of the water supply pipe 35 will be described later.

The ice tray 4 is disposed immediately below the water supply port of the water supply pipe 35 and freezes the supplied water.
The ice tray 4 includes a reversing device 11 and the like. The inverting device 11 functions to invert the ice tray 4 and to twist the ice tray 4 to separate ice. The ice storage container 6
This is for storing ice separated from the ice tray 4, and is installed immediately below the ice tray 4.

Next, the water supply pipe 35 will be described in detail.

The water supply pipe 35 is divided into an upper rubber water supply pipe 3 connected to the pump 2 and a lower rubber water supply pipe 5 continuously connected to the lower end thereof. It serves to supply the supplied water to the ice tray 4. In the present embodiment, since the water supply pipe 35 is divided into a plurality of upper water supply pipes 3 and a lower water supply pipe 5, the shapes of the individual water supply pipes 3 and 5 are simplified, and the length is reduced. Can be. This allows
The water supply pipe 35 can be easily manufactured, which is particularly advantageous in forming an air intake section described later. Further, the pump 2 of the ice making device provided in the refrigerator compartment 21 and the ice tray installed in the freezing compartment 20 are provided. 4 is easy, and the assembling process and manufacturing cost are good.

The upper water supply pipe 3 has an air intake 36 near the pump 2. This air intake 36
Has a rising portion 3a of a shape formed upward from a horizontal portion near the pump 2, and a cap 7 for closing the upper surface of the rising portion 3a.

The rising portion 3a is provided at least with the pump 2
And has a cross-sectional area equal to or greater than the cross-sectional area inside the water supply of the upper water supply pipe 3. In this embodiment, the shape of the rising portion 3a is rectangular so that it can be easily formed in a small space. This shape may be an elliptical shape, a cylindrical shape, or the like.

The cap 7 is provided for preventing dust and the like from entering from the upper opening of the rising portion 3a.
On its upper surface, a plurality of small holes 7a are provided as air inlets communicating with the inside of the water supply pipe 35. in this way,
The reason for providing the small hole 7a for air circulation communicating with the inside of the water supply pipe 35 near the pump 2 is that the water supplied by the forward rotation of the pump 2 is supplied to the inside of the upper water supply pipe 3 and the lower water supply pipe 5 after the pump operation is completed. This is to prevent the residue from remaining. Since the cap 7 is provided separately from the rising portion 3a and the small hole 7a is formed in the cap 7, these can be easily manufactured.

Here, the reason why water does not remain in the water supply pipe 35 by providing the small holes 7a will be described in more detail. After the forward rotation operation of the pump 2 is completed, the water tends to remain in the water supply pipe 35, but this residual water is applied to the lower water supply pipe by the pressure of the air flowing from the air inlet of the small hole 7a for air circulation. 5 is discharged to the ice tray 4 from the tip nozzle opening. Accordingly, even if the pump 2 does not perform the reverse rotation operation after the forward rotation operation, the pump 2 does not remain in the water supply pipe 35, so that the reverse rotation operation after the forward rotation operation of the pump 2 is unnecessary.

As described above, the necessity of the reverse rotation operation immediately after the forward rotation operation of the pump 2 is eliminated, so that it is not necessary to increase the motor capacity required to suck up the water remaining in the water supply pipe 35. No. 2 only needs to have a motor capacity necessary for supply from the water supply tank 9 to the ice tray. Accordingly, the pump 2 can have a small motor capacity and be inexpensive, and can have a long life and high reliability.

As described above, the air inlet 7a is connected to the pump 2
By setting the position higher than the discharge port, it is possible to reliably prevent a part of the water in the water supply from leaking from the small hole 7a during the water supply operation of the pump 2. Furthermore, by making the inside area of the rising portion 3a equal to or larger than the cross-sectional area of the passage of the water supply pipe 35, when the supply water sent from the pump 2 passes through the rising portion 3a of the air intake, water jumps,
Water jumping can be reduced. In addition, the small hole 7a of the cap 7 fitted to the rising portion 3a preferably has a diameter of about 1.5 mm to 2.0 mm in consideration of water jumping when the water passes through the rising portion 3a, water jumping, and the like. . With such a small hole 7a, it is difficult for dust and the like to enter, and water remaining in the water supply pipe 35 can be discharged to the ice tray 4 after the forward rotation operation of the pump 2.

Next, the operation of the ice making device 1 will be described.

When the amount of ice stored in the ice storage container 6 is detected and ice making becomes necessary, the pump 2 is reversely rotated for a predetermined time before the forward rotation of the pump 2, and then the forward rotation of the pump 2 is automatically started. Let it start. The reason for performing the reverse rotation operation for a predetermined time before the forward rotation operation of the pump 2 is to remove dirt, dust, etc. attached to the filter 18 in the pipe 10 on the suction side of the pump 2.

The pump 2 is constituted by a gear pump having a self-priming property, and water is directly sucked up by rotation of the gear pump. Therefore, even if there is no residual water on the water supply pipe 35 side during the reverse rotation operation, the water supply pipe 3
It is sufficiently possible to clean dirt, dust and the like adhering to the filter 18 of the pipe 10 by air from the air inlet 7a on the fifth side. Therefore, the load on the pump during the reverse rotation operation is small. In addition, the pump 2 has a small space in which the gears are meshed in the chamber of the pump 2, and there is a small concave portion in which water accumulates in a lower portion of the space. The amount of water accumulated in the concave groove in the pump 2 is as small as about 2 to 5 ml.
Can be cleaned.

With the start of the forward rotation of the pump 2 described above, the water in the water supply tank 9 is sucked into the pump 2 and supplied to the ice tray 4 via the upper water supply pipe 3 and the lower water supply pipe 5. The forward rotation operation of the pump 2 is performed for a preset time according to the capacity of the ice tray 4. When the forward rotation of the pump 2 is completed, the water supplied at the end of the operation is supplied to the air inlet 7 provided in the water supply pipe 3 as described above.
By the action of the air flowing in from a, the water is completely discharged from the water supply pipe 35 to the ice tray 4.

Next, a second embodiment to a fifth embodiment of the present invention will be described with reference to FIGS. In the second to fifth embodiments, the rising portion and the cap of the first embodiment are changed.

As shown in FIGS. 5 and 6, the second embodiment of the present invention is different from the first embodiment in that
5 in that the air inlet 7a is provided on the outer peripheral side surface of the cap 7. That is, a plurality of small holes 7a are provided on the outer peripheral side surface of the cap 7 to serve as an air intake. As in the first embodiment, the residual water in the water supply pipe 35 after the end of the normal rotation of the pump is eliminated. Can be done.

As shown in FIGS. 7 and 8, the third embodiment of the present invention differs from the first embodiment in that
Is different in that the shape of the rising portion 3a is cylindrical, and covers the cylindrical cap 7, and a plurality of small holes 7a are opened in the upper surface of the cap 7.

According to the fourth embodiment of the present invention, as shown in FIG. 9 and FIG.
The difference is that a small hole 7a for an air intake is opened in the cylindrical outer peripheral surface of the cap 7 provided in a.

The fifth embodiment of the present invention differs from the fourth embodiment in that a rising portion 3a is provided from the vertical portion of the upper water supply pipe 3, as shown in FIGS. Are different.

In the second to fifth embodiments as well, the small hole 7a of the air intake port is opened at a position near the pump 2 of the water supply pipe 35, so that the water supply pipe after the end of the normal rotation operation of the pump. It is possible to eliminate the residual water in 35.

It is to be noted that, even if the upper surface of the rising portion 3a in each of the above-described embodiments is formed so as to integrally cover the upper surface, and a plurality of small holes are opened in the upper surface or the outer peripheral side surface, the pump can be rotated after the normal rotation of the pump is completed. The remaining water in the water supply pipe 35 can be eliminated.

Next, a sixth embodiment to a seventh embodiment of the present invention will be described with reference to FIGS. This sixth
In the seventh to seventh embodiments, an air intake portion is provided at the connection between the upper water supply pipe 3 and the lower water supply pipe 5 located below the discharge port of the pump.

In the sixth embodiment, as shown in FIGS. 13 to 16, a plurality of outer notch grooves 14 are formed on the outer peripheral surface of the lower end portion 3b of the upper water supply pipe 3 so as to extend upward from the lowermost end surface. The height of the notch groove 14 is higher than the upper end surface of the lower water supply pipe 5. Lower water supply pipe 5
The upper end portion is partially expanded to form an expanded portion 5a, and its inner diameter is set to a size that allows the upper water supply pipe 3 to be inserted. When the upper water supply pipe 3 and the lower water supply pipe 5 are fitted to each other, the outer peripheral notch groove 14 at the lower end of the upper water supply pipe 3 is formed.
A space formed between the water supply pipe 35 and the inner surface of the expanded portion 5 a of the lower water supply pipe 5 forms an air intake 16 communicating with the inside of the water supply pipe 35. Lower end 3 of upper water supply pipe 3
The positioning ribs 12 provided on the b are to be in contact with the upper end surface of the expanded pipe portion 5a in the fitted state to form the air inlet 16 reliably. This positioning rib 12
Is provided on a part of the outer peripheral surface excluding the outer peripheral notch groove 14.

In the sixth embodiment, since the air intake 16 is provided at the connection portion provided in the vertical direction, water leaks from the air intake 16 to the outside at the time of water supply during the forward rotation of the pump. Air is taken in from the air inlet 16 after the end of the forward rotation of the pump, so that the water supply pipe 35
It is possible to eliminate the residual water inside.

In the sixth embodiment, the provision of the air intake at the connection portion located in the up-down direction is easy in terms of shape, and does not require a special space space. It is also advantageous in terms of cost.

The rib 13 provided on the lower end 3b of the upper water supply pipe 3 is an outer peripheral surface of the lower end 3b excluding the outer peripheral cutout groove 14. It is provided in the central part. Further, an inner peripheral groove 23 for receiving the stopper rib 13 is formed on the entire inner peripheral surface of the lower water supply pipe corresponding to the stopper rib 13 on the expanded part 5a side. The water supply pipe 3 and the lower water supply pipe 5 are hardly removed even when a vertical force is applied. In this case, when inserting the upper water supply pipe 3 into the expanded part 5a,
The material of the upper water supply pipe 3 is made of a flexible rubber so that the slip-off prevention rib 13 enters while being temporarily crushed,
In order to reliably maintain the fitting relationship, it is desirable that the lower water supply pipe 5 be made of plastic.

In the seventh embodiment, as shown in FIGS. 17 to 19, when the lower end portion 3b of the upper water supply pipe 3 is fitted to the expanded portion 5a of the lower water supply pipe 5, the air inlet 16
A fin 22 is formed above the air intake 16 so that dust, dust and the like hardly enter.

An inner notch 19 extending vertically is formed inside the expanded portion 5a of the lower water supply pipe 5. The notch groove 19 is formed in a plurality over the inner circumference, and the inner diameter of the inner circumferential surface is set to be equal to the outer diameter of the upper water supply pipe 3. The space formed between the upper water supply pipe 3 and the inner peripheral cutout groove 19 serves as an air inlet 16 communicating with the inside of the water supply pipe.

Also in the seventh embodiment, since the air intake 16 is provided at the connection portion provided in the up-down direction, water leaks from the air intake 16 to the outside at the time of water supply at the forward rotation of the pump. The remaining water in the water supply pipe 35 can be eliminated by taking in air from the air inlet 16 after the normal rotation of the pump.

[0053]

According to the present invention, with a simple structure, after the water supply operation by the forward rotation of the pump is completed, water that is going to remain in the water supply pipe is discharged to the ice tray by the inflow of air from the air inlet. This eliminates the need to operate the pump in the reverse rotation after the normal rotation of the pump, and reduces the capacity of the pump motor to reduce the cost and power consumption. Obtainable.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a refrigerator-freezer according to a first embodiment of the present invention.

FIG. 2 is an enlarged longitudinal sectional view of a main part of the refrigerator-freezer of FIG.

FIG. 3 is an enlarged perspective view of a portion A in FIG. 2 when a cap is attached.

FIG. 4 is an enlarged vertical sectional view of a portion A in FIG. 2;

FIG. 5 is a perspective view showing an air intake portion of an upper water supply pipe in a refrigerator-freezer according to a second embodiment of the present invention.

6 is a longitudinal sectional view of a water supply pipe portion shown in FIG.

FIG. 7 is a perspective view showing an air intake portion of an upper water supply pipe in a refrigerator according to a third embodiment of the present invention.

8 is a longitudinal sectional view of a water supply pipe portion shown in FIG.

FIG. 9 is a perspective view showing an air intake part of an upper water supply pipe in a refrigerator according to a fourth embodiment of the present invention.

FIG. 10 is a longitudinal sectional view of a water supply pipe part shown in FIG. 9;

FIG. 11 is a perspective view showing an air intake part of an upper water supply pipe in a refrigerator according to a fifth embodiment of the present invention.

FIG. 12 is a longitudinal sectional view of a water supply pipe portion shown in FIG.

FIG. 13 is a schematic longitudinal sectional view of a refrigerator-freezer according to a sixth embodiment of the present invention.

FIG. 14 is an enlarged perspective view of an upper water supply pipe and a lower water supply pipe in a part B of FIG. 13 when assembled.

FIG. 15 is a longitudinal sectional view showing a connection state of a connection portion between an upper water supply pipe and a lower water supply pipe in FIG. 14;

16 is a sectional view taken along the line CC of FIG.

FIG. 17 is a perspective view of a refrigerator-freezer according to a seventh embodiment of the present invention when an upper water supply pipe and a lower water supply pipe are assembled.

18 is a longitudinal sectional view of the connection state between the upper water supply pipe and the lower water supply pipe in FIG. 17 in a connected state.

FIG. 19 is a sectional view taken along the line DD in FIG. 18;

FIG. 20 is a schematic longitudinal sectional view of a conventional refrigerator-freezer.

FIG. 21 is an enlarged longitudinal sectional view of a main part of the refrigerator-freezer of FIG. 20;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ice making device, 2 ... Pump, 3 ... Upper water supply pipe, 3a
... Rising part, 3b ... Lower end of upper water supply pipe, 4 ... Ice tray, 5 ... Lower water supply pipe, 5a ... Expansion part of lower water supply pipe, 6 ... Ice storage container, 7 ... Cap, 7a ... Small hole, 8 ... Discharge Pipe, 8a: Suction pipe, 9: Water supply tank, 9a: Lid, 10: Piping, 11: Reversing device, 12: Positioning rib, 13: Prevention rib, 14: Outer cutout groove, 15 ...
Tank side connection part, 16 ... Air intake port, 17 ... Pump side connection part, 18 ... Filter, 19 ... Inner cutout groove, 20 ...
Freezer compartment, 21 ... refrigerator compartment, 22 ... fin, 23 ... inner circumferential groove,
30 ... Refrigerator body, 35 ... Water supply pipe, 36 ... Air intake unit.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Koichi Shibata 800, Tomita, Ohira, Ohira-cho, Shimotsuga-gun, Tochigi Prefecture Inside the Cooling and Refrigerating Business Dept., Hitachi, Ltd. Within Hitachi, Ltd.

Claims (8)

[Claims] 1. An ice making device having a water supply tank, a self-priming pump, a water supply pipe and an ice tray, and a refrigerator body forming a refrigerator compartment and a freezer compartment below the refrigerator compartment, wherein the water supply tank and the pump are provided with: Placed in a refrigerator compartment, the ice tray is placed in the freezer compartment, the water supply pipe is placed from the refrigerator compartment to the freezer compartment, and the pump is located above the water surface in the water supply tank. Water is sucked from the water supply tank and connected to the water supply tank and the water supply pipe so as to supply water to the ice tray through the water supply pipe. The water supply pipe is located near the pump and communicates with the inside of the water supply pipe. A refrigerator-freezer having an entrance. 2. An ice making apparatus having a water supply tank, a self-priming pump, a water supply pipe and an ice tray, and a refrigerator body forming a refrigerator compartment and a freezer compartment below the refrigerator compartment, wherein the water supply tank and the pump are provided with the water supply tank and the pump. Placed in a refrigerator compartment, the ice tray is placed in the freezer compartment, the water supply pipe is placed from the refrigerator compartment to the freezer compartment, and the pump is located above the water surface in the water supply tank. Suction water from the water supply tank, connected to the water supply tank and the water supply pipe so as to supply water to the ice tray through the water supply pipe,
The water supply pipe is a water supply pipe portion extending horizontally from a discharge port of the pump, and is provided with a rising portion of a shape having a cross-sectional area equal to or more than the inner cross-sectional area of the water supply pipe, and above the rising portion. A refrigerator-freezer characterized in that an air intake communicating with the inside of a water supply pipe is provided at a position where the refrigerator is located. 3. An ice making device having a water supply tank, a self-priming pump, a water supply pipe and an ice tray, and a refrigerator body forming a refrigerator compartment and a freezer compartment below the refrigerator compartment. Placed in a refrigerator compartment, the ice tray is placed in the freezer compartment, the water supply pipe is placed from the refrigerator compartment to the freezer compartment, and the pump is located above the water surface in the water supply tank. Suction water from the water supply tank, connected to the water supply tank and the water supply pipe so as to supply water to the ice tray through the water supply pipe,
The water supply pipe is divided into a plurality of parts having an upper water supply pipe connected to the pump and a lower water supply pipe leading to the ice making tray, and the upper water supply pipe is provided with an air intake communicating with the inside of the water supply pipe. A refrigerator-freezer characterized by: 4. An ice making device having a water supply tank, a self-priming pump, piping, a water supply pipe, and an ice tray, and a refrigerator main body having a refrigerator compartment and a freezing compartment below the refrigerator compartment. The pump is disposed in the refrigerator compartment, the ice tray is disposed in the freezer compartment, the water supply pipe is disposed from the refrigerator compartment to the freezer compartment, and the pump is above the water level in the water supply tank. Is connected to the pipe and the water supply pipe so as to supply water from the water supply tank to the ice tray through the water supply pipe through the water supply pipe, and the water supply pipe is located near the pump, A refrigerator having an air inlet communicating with the inside of a water supply pipe, and the pipe including a pump being inclined toward a water supply tank. 5. An ice making device having a water supply tank, a self-priming pump, piping, a water supply pipe, and an ice tray, and a refrigerator body forming a refrigerator compartment and a freezer compartment below the refrigerator compartment, wherein the water supply tank, the piping, and The pump is disposed in the refrigerator compartment, the ice tray is disposed in the freezer compartment, the water supply pipe is disposed from the refrigerator compartment to the freezer compartment, and the pump is above the water level in the water supply tank. Is connected to the water supply tank and the water supply pipe so as to suck water from the water supply tank and supply water to the ice tray through the water supply pipe, and the pump rotates in a reverse direction before the water supply operation starts by a forward rotation. The water supply pipe is provided with an air intake communicating with the inside of the water supply pipe near the pump, and the pipe is provided with a filter on the way. Refrigerator-freezer that. 6. An ice making device having a water supply tank, a self-priming pump, a water supply pipe, and an ice tray, and a refrigerator main body forming a refrigerator compartment and a freezing compartment below the refrigerator compartment, wherein the water supply tank and the pump are provided with: Placed in a refrigerator compartment, the ice tray is placed in the freezer compartment, the water supply pipe is placed from the refrigerator compartment to the freezer compartment, and the pump is located above the water surface in the water supply tank. Suction water from the water supply tank, connected to the water supply tank and the water supply pipe so as to supply water to the ice tray through the water supply pipe,
The water supply pipe is divided into a plurality of portions having an upper water supply pipe connected to the pump and a lower water supply pipe leading to the ice making tray, and a connection portion vertically provided between the upper water supply pipe and the lower water supply pipe is provided. A refrigerator provided with an air inlet communicating with the inside of the water supply pipe at the connection portion. 7. The connecting portion is fitted into the lower end portion of the upper water supply pipe inside the partially expanded upper end portion of the lower water supply pipe, and the outer peripheral surface of the lower end portion of the upper water supply pipe has a small size. Also, two or more notch grooves directed upward from the lowermost end face are formed, and the height of the notch grooves is provided higher than the upper end face of the lower water supply pipe, and the lower end of the upper water supply pipe and the lower water supply pipe are provided. When the upper end of the upper water supply pipe is fitted, a space formed between the outer peripheral cutout groove at the lower end of the upper water supply pipe and the inner peripheral surface of the upper end of the lower water supply pipe serves as an air intake communicating with the inside of the water supply pipe. The refrigerator according to claim 6, wherein: 8. The connecting portion is fitted into a lower end of the upper water supply pipe inside a partially expanded upper end of the lower water supply pipe, and at least an outer peripheral surface of a lower end of the upper water supply pipe is provided. A vertical inner circumferential notch groove in the inner circumferential surface;
When the lower end of the upper water supply pipe and the upper end of the lower water supply pipe are fitted to each other, a space formed between the outer peripheral surface of the lower end of the upper water supply pipe and the inner peripheral surface of the upper end of the lower water supply pipe. 7. A refrigerator according to claim 6, wherein the air inlet is an air intake communicating with the inside of the water supply pipe.